What Is a Roof Joist?
A roof joist is a structural member which provides support for the roof and distributes its weight so that it is even. Some roof designs lack joists, depending on how they are designed, using careful manipulation of other structural members to achieve the desired level of strength and stability. Because the roof joist network is integral to the roof and the rest of a structure, joists should never be cut, removed, or adjusted without advice from a professional.